基于ABAQUS的覆土油罐护体抗震性能有限元分析

ABAQUS Based Finite Element Analysis on Anti-seismic Performance of Buried Oil Tank Counter-fort

为深入了解覆土油罐护体在不同地震波作用下的动力响应,运用有限元分析软件ABAQUS对护体的简化模型进行了数值模拟分析。从有无减震层、减震层厚度以及减震层刚度3个方面对减震效果进行了探讨,结果表明:在地震荷载下,回填土从上到下水平位移逐渐减小;护体应力峰值主要集中在护体围墙的底部位置;减震层对护体起到一定的减震效果。所得结果可为覆土油罐抗震设计和实践提供参考。

To further understand the dynamic response of the buried oil tank counter-fort to different seismic waves, the finite element software ABAQUS is utilized to numerically simulate and analyze the simplified model of counter-fort. Various anti-seismic effects are discussed in three aspects such as containing damping layer or not, different thickness and different elasticity moduli of the damping layer. The results indicate that the horizontal displacement of the back-filled soil gradually decreases from the top to the bottom on the seismic load, and the stress peak values are concentrated in the bottom of the counter-fort, and the damping layer is useful on anti-seismic to the counter-fort. The results can provide a reference to the anti-seismic design and practice of the buried oil tank.